Hello - I just helped one of my Fractional CMO clients with an animated video. The firm charged $3,500 base price for due diligence and scripting and between $35 - $55 per second of animation. Hope that helps.

Very sharp looking production quality. Is the goal to repurpose what you
have already shot or to produce new concepts if the margins are acceptable
and there is a demand? I would think about distribution options to
understand how different channels value production. The copy/story feels
like it has a British tone. My concern is the reaction you get from
research on demographic appeal-kids, adults, "tweens", family friendly.
Having come from program licensing position for a major studio, they would
raise issues over number of episodes to sell as a series. Is this 2D
animation with an audio synchronization? Whether animation or live
production, it still comes down to story and what demographic core it can
appeal to. In comedy, character development and opposition give the
writers something to work with. I did some test 2D animation with friends
for a commercial market for around $30,000 an episode (length 2-2,5 min).
Here is an example of an adaptation of Seinfeld replacing video with
sketch-animation combined with the actual voice track of the episode. You
can see that the story is so strong that it doesn't matter if the animation
is a lower quality. If I knew your cost range, I could tell you what other
expenses go on top for distribution and marketing. If the show can find an
audience, short episodes would work in Social media, web, interstitials on
TV.

I just created a 90 second explainer video. The rates out there vary wildly. $2500-3000 seems to be the sweet spot. This includes scripting, voiceover, music and a generous amount of revisions. So that's $27 - $33 per sec.

There are cheaper options. I used one of these and paid $500, all in. It ended up good. But it took a very long time.